Attachment:
conelrad-1.JPG [ 44.89 KiB | Viewed 7185 times ]
Wonder how much of this will be carried on 155.475...
Eric
KB7DQH
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| ....Only a Test????? http://interceptradio.com/bbs/viewtopic.php?f=8&t=5690 |
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| Author: | kb7dqh [ Sun Oct 30, 2011 7:29 pm ] |
| Post subject: | ....Only a Test????? |
Attachment: conelrad-1.JPG [ 44.89 KiB | Viewed 7185 times ] Wonder how much of this will be carried on 155.475... Eric KB7DQH |
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| Author: | FlashP [ Mon Oct 31, 2011 7:09 am ] |
| Post subject: | Re: ....Only a Test????? |
http://www.fcc.gov/encyclopedia/emergen ... nwide-test Nov 9 (Wednesday) 1100 Pacific time |
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| Author: | icom1020 [ Mon Oct 31, 2011 6:43 pm ] |
| Post subject: | Re: ....Only a Test????? |
I've always wondered what happened to the 640 and 1240 stations like KFI and KGY and others. Did they sign off and another transmitter take over the CONELRAD or were they the originating stations, 640 being a clear channel. We had an old 62' Mercury wagon that had the hash marks at 640 and 1240. I think I asked my dad and he didn't know... |
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| Author: | Rich [ Mon Oct 31, 2011 10:46 pm ] |
| Post subject: | Re: ....Only a Test????? |
icom1020 wrote: I've always wondered what happened to the 640 and 1240 stations like KFI and KGY and others. Did they sign off and another transmitter take over the CONELRAD or were they the originating stations, 640 being a clear channel. We had an old 62' Mercury wagon that had the hash marks at 640 and 1240. I think I asked my dad and he didn't know... The same concept exists its just no longer on two fixed frequencies. The modern equivalent is an LP-1 station that covers an EAS Local Area. In some areas the LP-1 stations may be fed from state sources originating on VHF/UHF frequencies. This link has a good diagram and explanation: http://transition.fcc.gov/pshs/techtopics/techtopics21.html |
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| Author: | icom1020 [ Tue Nov 01, 2011 8:27 am ] |
| Post subject: | Re: ....Only a Test????? |
actually I was thinking what happened during the days of CONELRAD if a 640 or 1240 had to sign off, what took over on that freq and from where? |
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| Author: | kb7dqh [ Tue Nov 01, 2011 8:28 pm ] |
| Post subject: | Re: ....Only a Test????? |
.... They didn't "completely" sign off... but would periodically transmit civil-defense related stuff... everybody else had to cease transmitting. It was thought Soviet bombers would utilize broadcast signals to DF their targets... so in the event of an attack this system was devised to CONtrol ELectromagnetic RADiation... Some neato vids on Youtube... Eric KB7DQH |
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| Author: | icom1020 [ Thu Nov 03, 2011 6:36 pm ] |
| Post subject: | Re: ....Only a Test????? |
thanks |
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| Author: | KE7JFF [ Sat Nov 05, 2011 5:55 am ] |
| Post subject: | Re: ....Only a Test????? |
I've heard from a few old timer engineers that during the CONELRAD era, there was some AM transmitters that didn't like being turned on and off constantly and had some failures. |
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| Author: | icom1020 [ Wed Nov 09, 2011 4:37 pm ] |
| Post subject: | Re: ....Only a Test????? |
I forgot to listen in on NLEEC, anyone else? I was watching TMC and it did a pre alert and then took over for 30 sec or so. The audio seemed ok Some others had different results http://www.tri-cityherald.com/2011/11/0 ... ystem.html |
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| Author: | Jim [ Wed Nov 09, 2011 5:44 pm ] |
| Post subject: | Re: ....Only a Test????? |
Heard it on 155.475 (NLEC) in Bellingham @ 1100 today. |
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| Author: | KE7JFF [ Thu Nov 10, 2011 6:16 pm ] |
| Post subject: | Re: ....Only a Test????? |
Oregon failed the test thanks to a software decoder failure at OPB.... |
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